Pre-operative virtual simulation and three-dimensional printing techniques for the surgical management of acetabular fractures

2018 ◽  
Vol 43 (8) ◽  
pp. 1969-1976 ◽  
Author(s):  
Chun-Liang Hsu ◽  
Yu-Ching Chou ◽  
Yuan-Ta Li ◽  
Jia-En Chen ◽  
Chun-Chi Hung ◽  
...  
Keyword(s):  
Surgical Management ◽  
Three Dimensional ◽  
Virtual Simulation ◽  
Acetabular Fractures ◽  
Three Dimensional Printing ◽  
Dimensional Printing ◽  
Printing Techniques

scholarly journals Plant-inspired pipettes

2018 ◽  
Vol 15 (140) ◽  
pp. 20170868 ◽  
Author(s):  
Keigo Nakamura ◽  
Tetsuya Hisanaga ◽  
Koichi Fujimoto ◽  
Keiji Nakajima ◽  
Hirofumi Wada
Keyword(s):  
Three Dimensional ◽  
Maximum Size ◽  
Experimental Investigations ◽  
Marchantia Polymorpha ◽  
Water Droplets ◽  
Rigid Object ◽  
Three Dimensional Printing ◽  
Simple Scaling ◽  
Dimensional Printing ◽  
Printing Techniques

The female sex organ of the liverwort ( Marchantia polymorpha ) has a characteristic parasol-like form highly suitable for collecting water droplets containing sperm for fertilization. Motivated by this observation and using three-dimensional printing techniques, we develop a parasol-like rigid object that can grab, transport and release water droplets of a maximum size of about 1 cm. By combining experiments and scaling theory, we quantify the object's fundamental wetting and fluid dynamical properties. We construct a stability phase diagram and suggest that it is largely insensitive to properties of liquids such as surface tension and viscosity. A simple scaling argument is developed to explain the phase boundary. Our study provides basic design rules of a simple pipette-like device with bubble-free capture and drop of liquids, which can be used in laboratory settings and has applications within soft robotics. Through systematic experimental investigations, we suggest the optimal design criteria of the liverwort-inspired object to achieve maximal pipetting performance. We also provide, based on our scalable model experiments, a biological implication for the mechanistic advantage of this structure in liverwort reproduction.

The role of three‐dimensional printing in the surgical management of breast cancer

2019 ◽  
Vol 120 (6) ◽  
pp. 897-902 ◽  
Author(s):  
Lumarie Santiago ◽  
Beatriz E. Adrada ◽  
Abigail S. Caudle ◽  
Mark W. Clemens ◽  
Dalliah M. Black ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Surgical Management ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Dimensional Printing

scholarly journals Three-dimensional printing of tactile sensors for soft robotics

MRS Bulletin ◽  
2021 ◽  
Author(s):  
Xinran Zhou ◽  
Pooi See Lee
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
Tactile Sensor ◽  
Soft Robotics ◽  
Fabrication Method ◽  
Tactile Sensors ◽  
Three Dimensional Printing ◽  
Future Potential ◽  
Dimensional Printing ◽  
Printing Techniques

AbstractThree-dimensional (3D) printing has become an important fabrication method for soft robotics, due to its ability to make complex 3D structures from computer designs in simple steps and multimaterial co-deposition ability. In this article, the application of 3D printing techniques in the fabrication of four types of tactile sensors commonly used in soft robotics, including the piezoresistive tactile sensor, capacitive tactile sensor, piezoelectric tactile sensor, and triboelectric tactile sensor, will be discussed. The 3D printing mechanism, material, and structure for each type of sensor will be introduced, and the perspectives on the future potential of 3D printable tactile sensors will be discussed.

scholarly journals Fine Details Obtained by 3D Printing and Using Polymers

2018 ◽  
Vol 55 (4) ◽  
pp. 474-477
Author(s):  
Laurentiu Slatineanu ◽  
Oana Dodun ◽  
Gheorghe Nagit ◽  
Margareta Coteata ◽  
Gheorghe Bosoanca ◽  
...  
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
Printing Process ◽  
Three Dimensional Printing ◽  
Manufacturing Method ◽  
Nozzle Orifice ◽  
Systemic Analysis ◽  
Dimensional Printing ◽  
Printing Techniques ◽  
Isosceles Triangles

The three-dimensional printing is a manufacturing method involving the addition of materials by using certain principles valid in printing techniques. There are various techniques of a three-dimensional printing method and the most of them could be applied inclusively to generate objects of polymers. The objective of the research presented in this paper was to analyze the capabilities of 3D printing process or equipment of generating fine details and to identify a way of evaluating these capabilities when using polyester PLA as filament material. The systemic analysis of the printing techniques which use a fused polymer filament deposition showed that there are some groups of factors able to affect the obtaining of fine details. An experimental research was designed in order to highlight the influence exerted by the diameter of the nozzle orifice and by the values of sharp angles of isosceles triangles on the heights of these triangles, thus obtaining an image concerning the possibilities of generating sharp edges by three-dimensional printing. To evaluate the capacity of the 3D printing process of obtaining thin walls, a spiral including linear segments with a decreasing thickness from 1 mm was also achieved on the test piece. By mathematical processing of the experimental results using a specialized software, empirical mathematical models were determined to evaluate the intensity of influences exerted by the two process input factors on the heights corresponding to isosceles triangles characterized by sharp angles.

scholarly journals Biocompatibility of Bespoke 3D-Printed Titanium Alloy Plates for Treating Acetabular Fractures

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Xuezhi Lin ◽  
Xingling Xiao ◽  
Yimeng Wang ◽  
Cheng Gu ◽  
Canbin Wang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Culture Medium ◽  
Three Dimensional ◽  
Acetabular Fractures ◽  
Three Dimensional Printing ◽  
3D Printed ◽  
Manufacturing Techniques ◽  
Dimensional Printing

Treatment of acetabular fractures is challenging, not only because of its complicated anatomy but also because of the lack of fitting plates. Personalized titanium alloy plates can be fabricated by selective laser melting (SLM) but the biocompatibility of these three-dimensional printing (3D-printed) plates remains unknown. Plates were manufactured by SLM and their cytocompatibility was assessed by observing the metabolism of L929 fibroblasts incubated with culture medium extracts using a CCK-8 assay and their morphology by light microscopy. Allergenicity was tested using a guinea pig maximization test. In addition, acute systemic toxicity of the 3D-printed plates was determined by injecting extracts from the implants into the tail veins of mice. Finally, the histocompatibility of the plates was investigated by implanting them into the dorsal muscles of rabbits. The in vitro results suggested that cytocompatibility of the 3D-printed plates was similar to that of conventional plates. The in vivo data also demonstrated histocompatibility that was comparable between the two manufacturing techniques. In conclusion, both in vivo and in vitro experiments suggested favorable biocompatibility of 3D-printed titanium alloy plates, indicating that it is a promising option for treatment of acetabular fractures.

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